Underdetermined DOA Estimation via Independent Component Analysis and Time-Frequency Masking

Figure 4

Histogram of the estimated DOAs via ICA from the original mixtures (a), from mixtures after the source from 𝜃₁ was masked (b), and from mixtures after the sources from both 𝜃₁ and 𝜃₂ were masked (c).

(a)

(b)

(c)